10. Rift Valleys (graben) & Block Mountains (horst) formations: tensional Flashcards
1
Q
description
A
both formed @ divergent plate boundaries –> fault is a fracture in rocks along which rocks are displaced –> tensional forces from movements result in parts of crust fracturing
2
Q
rift valley e.g.
down
A
East African Rift Valley, African Plate (Nubian) and African Plate (Somalian)
3
Q
block mountain e.g.
up
A
Vosages in France, Black Forest in Germany separated by Rhine Valley, Eurasian Plate & North American Plate